package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.admin.mapper.SystemUserMapper;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.service.SystemUserService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.wf.captcha.GifCaptcha;
import com.wf.captcha.SpecCaptcha;
;
import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import org.springframework.util.StringUtils;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

/**
 * ClassName: LoginServiceImpl
 * Description:
 *
 * @Author 刘艳丽
 * @Create 2024/9/24 17:34
 * @Version 1.0
 */
@Service
public class LoginServiceImpl implements LoginService {

    // 用于操作Redis数据库, 处理字符串类型的键和值
    @Autowired
    private StringRedisTemplate stringRedisTemplate;
    @Autowired
    private SystemUserMapper systemUserMapper;

    @Override
    public CaptchaVo getCaptcha() {
        // len: 验证码内容的个数
//        SpecCaptcha specCaptcha = new SpecCaptcha(130, 48, 5);
        // gif类型
        GifCaptcha gifCaptcha = new GifCaptcha(130, 48, 5);
        // 验证码
        String verCode = gifCaptcha.text().toLowerCase();
        // 验证码的图片
        String img = gifCaptcha.toBase64();
        // key: 当前验证码 保存到redis中的key
        String key = UUID.randomUUID().toString();

        stringRedisTemplate.opsForValue().set(key, verCode, RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);
        return new CaptchaVo(img, key);
    }

    @Override
    public String login(LoginVo loginVo) {
        // 判断验证码是否输入
        if (!StringUtils.hasText(loginVo.getCaptchaCode())){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_NOT_FOUND);
        }
        // 判断redis中的验证码是否过期
        String redisCode = stringRedisTemplate.opsForValue().get(loginVo.getCaptchaKey());
        if (redisCode == null){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
        }
        // 判断验证码输入的是否正确
        if (!redisCode.equals(loginVo.getCaptchaCode())){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }

        // 查询账号是否存在
        SystemUser systemUser = systemUserMapper.selectOne(new LambdaQueryWrapper<SystemUser>().eq(SystemUser::getUsername, loginVo.getUsername()));

        if (systemUser == null){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }

        // 判断用户是否被禁用
        if (systemUser.getStatus() == BaseStatus.DISABLE){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
        }

        // 比较密码是否正确
        // 客户都安密码加密
        String pwd = DigestUtils.md5Hex(loginVo.getPassword());
        System.out.println("pwd = " + pwd);
        if (!systemUser.getPassword().equals(pwd)){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }

        // 创建token
        String token = JwtUtil.createToken(systemUser.getId(), systemUser.getUsername());

        return token;

       /* // 判断验证码
        if (!StringUtils.hasText(loginVo.getCaptchaCode())){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_NOT_FOUND);
        }
        // 判断redis中的验证码是否过期
        String redisCode = stringRedisTemplate.opsForValue().get(loginVo.getCaptchaKey());
        if (redisCode == null){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
        }
        // 判断验证码输入的是否正确
        if (!redisCode.equals(loginVo.getCaptchaCode())){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }

        // 查询账号是否存在
        SystemUser systemUser = systemUserMapper.selectOne(new LambdaQueryWrapper<SystemUser>().eq(SystemUser::getUsername, loginVo.getUsername()));

        if (systemUser == null){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }

        // 判断用户是否被禁用
        if (systemUser.getStatus() == BaseStatus.DISABLE){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
        }

        //比较密码是否正确
        //先对客户端输入的密码进行加密
        String pwd = DigestUtils.md5Hex(loginVo.getPassword());
        System.out.println(pwd);
        if (!systemUser.getPassword().equals(pwd)){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }

        //创建token
        String token = JwtUtil.createToken(systemUser.getId(), systemUser.getUsername());
        return token;*/
    }
}
